Meaning: It means that you cannot kill Han Xin if you see the sky, you cannot kill Han Xin if you see the earth, and you cannot kill Han Xin with iron objects. In summary, Han Xin cannot be killed. Liu Bang promised not to kill Han Xin under any circumstances.

Liu Bang once promised Han Xin: "Don't kill when you see the sky, don't kill when you see the ground, and don't kill when you see iron." This means that you cannot kill Han Xin when you see the sky, you cannot kill Han Xin when you see the earth, and you cannot kill Han Xin with iron objects.

Han Xin is Liu Bang’s first founding hero. Liu Bang’s several tough battles in the country are basically attributed to Han Xin. For example, the well-known Last Stand, Ambush from All Sides, and even Liu Bang’s nemesis Xiang Yu eventually became a hero. Forced by Han Xin to commit suicide, he died. Liu Bang once promised Han Xin: "Don't kill when you see the sky, don't kill when you see the ground, and don't kill when you see iron."

Extended information

Han Xin (about 231 BC - 196 BC), Han nationality, was from Huaiyin (now Huai'an District, Huai'an City, Jiangsu Province, also known as Huaiyin District). The founding hero and military strategist of the Western Han Dynasty, one of the Four Saints of Military Strategies, one of the Three Heroes of the Early Han Dynasty, a representative figure of the "military power planner" in Chinese military thought, and was regarded as a "soldier immortal" and "divine commander" by later generations. ?

At the end of the Qin Dynasty, he participated in the anti-Qin struggle and defected to Xiang Liang and Xiang Yu, but was not appointed. He switched to Liu Bang and was recommended by Xia Houying to serve as the governor of Su. He was appointed as a general by Xiao Hebao and formulated Hanzhong countermeasures for Liu Bang. After Liu Bang was defeated in Pengcheng, Han Xin first defeated the Chu army between Jing and Suo, and then pacified Wei.

Requesting orders for the Northern Expedition to capture the State of Dai, Liu Bang gathered his elite troops and defeated the State of Zhao in a last-ditch battle, and sent people to surrender to the State of Yan. Support Liu Bang and clear out the Chu Qi soldiers sent by Xiang Yu to the State of Zhao, and pacify the remaining cities of the State of Zhao. After Liu Bang defeated Cheng Gao and captured his elite troops, he was ordered to attack Qi and wiped out the entire Chu army of 200,000 in Weishui.

Han Xin attacked Chu, and Xiang Yu signed a gap agreement with Liu Bang. Liu Bang followed Zhang Liang and Chen Ping's plan to tear up the Chaos Agreement and pursue Xiang Yu but failed. In the fifth year of the Han Dynasty, he led his troops to join forces at Gaixia to encircle and annihilate the Chu army. After Xiang Yu's death, he was relieved of military power and moved to the throne of Chu. He was demoted to the title of Marquis of Huaiyin due to false accusations. Empress Lu conspired with Xiao He to trap and kill the three clans in the bell chamber of Changle Palace.

"The country's scholars are unparalleled" and "their achievements are unparalleled and unparalleled" were the evaluations made by people during the Chu and Han Dynasties. As a commander-in-chief, he captured Wei, replaced and defeated Zhao, threatened Yan, attacked Qi in the east, and destroyed Chu in the south. He became famous throughout the country and shocked the world. As a military theorist, he collaborated with Zhang Liang to compile military books and sequential military tactics, and wrote " Three chapters of "Han Xin's Art of War".

Reference: Baidu Encyclopedia-Han Xin